KR100292533B1 - Heat exchanger - Google Patents

Abstract

The present invention relates to a heat exchanger, comprising: a plurality of heat transfer plates arranged so that a through hole formed through a plate surface has a rectangular shape; At least one of the through-holes of the heat transfer plate disposed in the diagonal direction by forming a first flow path along the plate surface in cooperation with both adjacent heat transfer plates interposed between the heat transfer plates, the first flow path along the flow direction of the fluid An annular first flow path forming member disposed at an upstream side and a downstream side of the ring, and having a pair of first communication holes formed therein so as to communicate with each other in the thickness direction; At least one of the first flow path forming member and the heat exchanger plate are disposed in an alternating manner along the thickness direction to form a second flow path that intersects with the first flow path when coplanar with the adjacent heat transfer plates. A ring-shaped second channel forming member in which a pair of second communication holes communicating with the first channel are formed; It is characterized in that it comprises a first cover member which is finally disposed on one side along the stacking direction to block the first flow path and the second flow path to the outside. As a result, a heat exchanger capable of simplifying the manufacturing process and consolidating the combined state of the combined components by enabling the coupling between the components in one coupling process is provided.

Description

Heat exchanger {HEAT EXCHANGER}

The present invention relates to a heat exchanger, and more particularly, by simplifying the manufacturing process by allowing all parts to be bonded to each other by brazing and welding by one time soldering and soldered parts when welding The present invention relates to a heat exchanger capable of preventing separation by heat generated.

1 is an exploded perspective view of a conventional heat exchanger, Figure 2 is a cross-sectional view taken along the line II-II of FIG. As shown in these figures, the heat exchanger has a substantially rectangular parallelepiped shape and a main body 101 in which a plurality of flow paths are formed so as to be heat-exchanged while the first and second fluids different from each other pass therethrough, Coupled to one side and both short sides of the long side portion has a plurality of headers (121a ~ 121d) for communicating with each other the flow path of the same fluid.

A flow path of the first fluid is formed along the longitudinal direction of the main body 101, and inlets 103a and 103b and an outlet (not shown) of each flow path of the first fluid are formed at both ends of the main body 101, respectively. It is. Each inlet (not shown) of the flow path of the second fluid is formed at one side of the long side portion of the main body 101, and each outlet 105c, 105d of the flow path of the second fluid is formed at the diagonal side region of the opposite long side portion, respectively. It is.

Headers 121a to 121d each having a cylindrical shape cut out to be able to communicate with each flow path of the same fluid are coupled to the inlet and the outlet of each flow path of the first and second fluids, respectively. Fluid headers 123a to 123d are connected to the headers 121a to 121d, respectively, so that the first and second fluids can flow in and out from the outside, respectively.

On the other hand, the main body 101 is formed of a metal member having a rectangular plate shape and is arranged between the plurality of heat transfer plates 125 and the heat transfer plate 125 which are spaced apart by a predetermined distance in parallel with each other along the thickness direction and cooperate with the heat transfer plate 125. The edge bar 127 of the rectangular bar shape to form a flow path of the fluid therein, and the heat transfer fin member 129 accommodated to promote the heat transfer action in the flow path formed by the heat transfer plate 125 and the edge bar 127 Have

The heat transfer fin member 129 may be formed by a processing method such as embossing to form a thin plate having a wrinkled shape so that the heat transfer area is increased or a plurality of protrusions are formed from the plate surface.

In the contact area between the heat transfer plate 125 and the edge bar 127, a relatively low melting point (Filler Metal) is applied to each other by a soldering method called brazing. Once the brazing is complete, the header is welded to the inlet and outlet of each fluid path.

By the way, in such a conventional heat exchanger, the inlet of each flow path of the main body 101 in the state which brazed the main body 101 which consists of the heat-transfer plate 125, the edge bar 127, and the heat-transfer fin member 129 first, There is a hassle to weld each of the headers 121a to 121d at the outlet. In particular, since the headers 121a to 121d are coupled to the main body 101 by welding, relatively high heat is generated, and the brazing material between the heat transfer plate 125 and the edge bar 127 is generated by the heat generated at this time. There is a problem that a so-called debrazing phenomenon occurs in which the mutual coupling sites are melted to melt.

Accordingly, it is an object of the present invention to provide a heat exchanger that enables the joining of parts in one joining process to simplify the manufacturing process and to solidify the joining state of the joined parts.

1 is an exploded perspective view of a conventional heat exchanger,

2 is a cross-sectional view taken along the line II-II of FIG. 1;

3 is an exploded perspective view of a heat exchanger according to an embodiment of the present invention;

4 is a perspective view of a coupled state of the heat exchanger of FIG.

5 and 6 are cross-sectional views taken along the lines VV and VIV of FIG. 4, respectively.

Explanation of symbols on the main parts of the drawings

10: heat transfer plate 11: heat transfer unit

12a ~ 12d, 22a ~ 22d, 32a ~ 32d, 52a ~ 52d: each protrusion

13a to 13d: through hole 20: first flow path forming member

21: heat transfer pin receiving portion 24b, 24d, 34a, 34c: communication hole

30: second flow path forming member 40: heat transfer fin member

50: first cover member 60: second cover member

62a ~ 62d: fluid receiving part 63,64: inlet pipe

65,66: outflow pipe

The above object is, according to the present invention, a plurality of heat transfer plate is arranged so that the through-hole formed through the plate surface to form a rectangular shape; At least one of the through-holes of the heat transfer plate disposed in the diagonal direction by forming a first flow path along the plate surface in cooperation with both adjacent heat transfer plates interposed between the heat transfer plates, the first flow path along the flow direction of the fluid An annular first flow path forming member disposed at an upstream side and a downstream side of the ring, and having a pair of first communication holes formed therein so as to communicate with each other in the thickness direction; At least one of the first flow path forming member and the heat exchanger plate are disposed in an alternating manner along the thickness direction to form a second flow path that intersects with the first flow path when coplanar with the adjacent heat transfer plates. A ring-shaped second channel forming member in which a pair of second communication holes communicating with the first channel are formed; It is achieved by a heat exchanger, characterized in that it comprises a first cover member which is finally disposed on one side along the lamination direction to block the first flow path and the second flow path to the outside.

Here, it is preferable to further include a heat transfer fin member accommodated in at least one of the first flow path forming member and the second flow path forming member to be in contact with the heat transfer plate to promote heat transfer.

It is effective that the heat transfer fin member has a wave shape in the transverse direction of the flow direction of each fluid.

The heat transfer plate and the first and second flow path forming members have a rectangular shape, and each long side portion has protrusions protruding in a plate direction over a predetermined length section, and the through hole and the communication hole are formed in the protrusion portion. It is preferable to form each.

It is effective to further include a second cover member having respective inlets and outlets of the first and second flow passages disposed on opposite sides of the first cover member.

Hereinafter, with reference to the accompanying drawings will be described in detail with respect to the present invention.

3 is an exploded perspective view of a heat exchanger according to an embodiment of the present invention, FIG. 4 is a perspective view of a coupled state of the heat exchanger of FIG. 3, and FIGS. 5 and 6 are lines V-V and VI- of FIG. 4, respectively. It is sectional drawing along the VI. As shown in these figures, the heat exchanger is formed of a plate-like member and spaced apart a predetermined distance along the thickness direction and arranged in parallel to each other, and the heat transfer plate 10 interposed between the heat transfer plate 10 along the plate surface direction. Ring-shaped first and second flow path forming members 20 and 30 which cooperate with the heat transfer plate 10 to form a flow path, heat transfer fin members 40 disposed in the flow path to promote heat transfer, and along the stacking direction. Finally, the first cover member 50 disposed to block these flow paths to the outside, and the second cover member 60 disposed on opposite sides of the first cover member 50 to form inlets and outlets of these flow paths. Has

The first cover member 50 is formed of a rectangular plate-shaped metal member, and semicircular protrusions 52a to 52d protruding along the plate surface direction are formed in both side regions of each long side.

The second cover member 60 has a substantially rectangular shape so as to correspond to the first cover member 50, and the first and second fluids are temporarily suspended in corresponding regions of the protrusions 52a to 52d of the first cover member 50, respectively. The hemispherical first fluid accommodating parts 62a and 62c and the second fluid accommodating parts 62b and 62d are formed so as to be accommodated. Inlet pipes 63 and 64 and outlet pipes 65 and 66 of the same fluid are connected to each of the pair of fluid receiving portions 62a to 62d arranged in the diagonal direction.

The heat transfer plate 10 is a semicircular ring projecting along the plate direction such that the heat transfer portion 11 is formed of a substantially rectangular plate-like member, and through holes 13a to 13d are formed in both side regions of the long side portion of the heat transfer portion 11. It has projections 12a-12d of shape.

Semi-circular protrusions 22a having communication holes 24b, 24d, 34a, and 34c formed in the first and second flow path forming members 20 and 30 so as to communicate with the through holes 13a to 13d of the heat transfer plate 10, respectively. 22d, 32a-32d, and the heat-transfer fin accommodating part 21,31 which accommodates the heat-transfer fin member 40 are formed, respectively. Each of the pair of protrusions 22a, 22c, 32b, and 32d disposed to be symmetrically rotated in the diagonal direction among the protrusions 22a to 22d, 32a to 32d of the first and second flow path forming members 20 and 30 are heat transfer fins. It is formed so as to be in communication with the receiving portion (21, 31), and the remaining pair of protrusions (22b, 22d, 32a, 32c) is formed so as to be partitioned with the heat transfer fin receiving portion (21, 31), respectively.

The heat transfer fin member 40 has a substantially parallelogram shape and is accommodated in the heat transfer fin accommodation portions 21 and 31 of the first and second flow path forming members 20 and 30. The heat transfer fin member 40 is formed by processing the metal thin plate member in a pleated shape in which the government and the bottom are alternately repeated so that the heat transfer area is increased.

By such a configuration, first, the heat transfer plate 10, the first flow path forming member 20 and the second flow path forming member 30, and the first and second cover members 50 and 60 are in contact with each other. Allow braze to be applied. Next, any one of the first and second flow path forming members 20 and 30 is deposited on the upper side of the first cover member 50, and the heat transfer plate 10 is stacked thereon. When any one of the first and second flow path forming members 20 and 30 is first stacked, the first and second flow path forming members 20 and 30 are alternately disposed therebetween with the heat transfer plate 10 therebetween. The arrangement allows the flow paths of the first and second fluids to be alternately formed.

In consideration of the fluid amount and flow velocity, an appropriate number of first and second flow path forming members 20 and 30 are alternately arranged, and the second cover member 60 is disposed on the uppermost layer. When lamination is complete, they are brazed to allow them to be joined together. When the brazing is completed, the inflow pipes 63 and 64 and the outflow pipes 65 and 66 of the fluid are connected to the inlet and the outlet of the fluid flow path of the second cover member 60.

Each fluid introduced through each of the inflow pipes 63 and 64 flows in the direction of the solid arrow and the dotted arrow, as shown in FIG. 3, and flows into the branched flow path, and the heat transfer plate 10 and the heat transfer fins. After heat-exchanging through the member 40, it flows out through the said outlet pipes 65 and 66.

In the above-described and illustrated embodiments, although the first flow path forming member 20 and the second flow path forming member 30 are formed to be the same and disposed to be rotationally symmetrical, they are configured to form flow paths of different fluids, but the flow rate and heat exchange In consideration of speed and the like, the thicknesses of the first and second flow path forming members 20 and 30 and the size of each protrusion may be appropriately adjusted.

In addition, in the above-described and illustrated embodiments, the first fluid and the second fluid are regarded as mutually exchanging heat at substantially the same flow rate, and the first and second flow path forming members 20 and 30 are alternately arranged one by one. Although the configuration is described, it is also possible to arrange two or more second flow path forming member 30 with respect to one first flow path forming member 20, and vice versa.

In the above-described and illustrated embodiments, the first and second flow path forming members 20 and 30 are configured to have semi-circular protrusions 22a to 22d and 32a to 32d protruding outward. However, it is of course possible to form an ellipse or polygonal shape. In addition, the first and second flow path forming members 20 and 30 may be formed in a quadrangular shape having no protruding portion, and a diagonal path region may be partially partitioned to form a communication path to allow other fluids to pass therethrough.

As described above, according to the present invention, by allowing the components to be combined by one brazing, as in the prior art, it is possible to simplify the manufacturing process by removing the additional welding process, the state of the components can be continuously maintained A heat exchanger is provided. In addition, the heat exchanger according to the present invention, the manufacturing process is simplified to reduce the manufacturing cost, it is possible to ensure the stability of the quality as the failure rate is low.

Claims (5)

A plurality of heat transfer plates arranged so that the through holes formed through the plate surface form a quadrangular shape; At least one of the through-holes of the heat transfer plate disposed in the diagonal direction by forming a first flow path along the plate surface in cooperation with both adjacent heat transfer plates interposed between the heat transfer plates, the first flow path along the flow direction of the fluid An annular first flow path forming member disposed at an upstream side and a downstream side of the ring, and having a pair of first communication holes formed therein so as to communicate with each other in the thickness direction; At least one of the first flow path forming member and the heat exchanger plate are disposed in an alternating manner along the thickness direction to form a second flow path that intersects with the first flow path when coplanar with the adjacent heat transfer plates. A ring-shaped second channel forming member in which a pair of second communication holes communicating with the first channel are formed; And a first cover member which is finally disposed on one side along the stacking direction to block the first flow path and the second flow path to the outside. The heat exchanger of claim 1, further comprising a heat transfer fin member accommodated in at least one of the first flow path forming member and the second flow path forming member to be in contact with the heat transfer plate to promote heat transfer. group. 3. The heat exchanger of claim 2, wherein the heat transfer fin member has a wave shape in a transverse direction of the flow direction of each fluid. According to any one of claims 1 to 3, wherein the heat transfer plate and the first and second flow path forming member has a rectangular shape, each long side portion is formed with a protrusion protruding along the plate surface direction over a predetermined length section And the through hole and the communication hole are formed in the protruding portion, respectively. 4. A method according to any one of claims 1 to 3, further comprising a second cover member having respective inlets and outlets of said first and second flow paths disposed on opposite sides of said first cover member. heat transmitter.